CN108973369B - Uncovering and displaying local holographic color printing anti-counterfeiting film and manufacturing method thereof - Google Patents
Uncovering and displaying local holographic color printing anti-counterfeiting film and manufacturing method thereof Download PDFInfo
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- CN108973369B CN108973369B CN201810694224.5A CN201810694224A CN108973369B CN 108973369 B CN108973369 B CN 108973369B CN 201810694224 A CN201810694224 A CN 201810694224A CN 108973369 B CN108973369 B CN 108973369B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/06—Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
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Abstract
The invention relates to a revealing local holographic color printing anti-counterfeiting film and a manufacturing method thereof, wherein the anti-counterfeiting film is characterized by comprising a PET (polyethylene terephthalate) base film, a color printing layer, a first composite coating, a holographic information layer, a second composite coating and a transfer coating, wherein the holographic information layer is partially covered by the second composite coating, and the adhesive force between the transfer coating and the first composite coating and between the transfer coating and the second composite coating is smaller than the adhesive force between the color printing layer and the first composite coating as well as between the first composite coating and between the transfer coating and the second composite coating. The manufacturing method is characterized by comprising the following steps: 1) carrying out color printing on the surface of the PET base film; 2) coating composite mould pressing coating on the surface of the color printing layer; 3) embossing the holographic information layer; 4) the gravure printing composite coating is adopted in partial area; 5) coating transfer paint on the holographic information layer and the second composite coating to form a transfer coating; the product of the invention has the advantage of good anti-counterfeiting performance, and the manufacturing method of the invention has the advantage of stable and reliable process.
Description
Technical Field
The invention belongs to the field of packaging products, and particularly relates to an uncovering and displaying local holographic color printing anti-counterfeiting film and a manufacturing method thereof.
Background
The holographic image has the characteristics of clear image, gorgeous color and strong stereoscopic impression, is widely applied to the field of packaging from the last 80 th century, is generally arranged at a position striking the surface of the packaging, and currently along with the popularization of laser holographic image manufacturing technology and equipment, counterfeiting technology is continuously improved, the anti-counterfeiting performance of the holographic image is poor, and the current anti-counterfeiting requirements cannot be met.
Disclosure of Invention
The invention aims to solve the defect of poor anti-counterfeiting performance of the prior art that a holographic image is arranged on the surface of an anti-counterfeiting film, and provides an uncovering and displaying local holographic color printing anti-counterfeiting film and a manufacturing method thereof.
The invention is realized by the following technical scheme:
the revealing local holographic color printing anti-counterfeiting film is characterized by comprising a PET (polyethylene terephthalate) base film, a color printing layer, a first composite coating, a holographic information layer, a second composite coating and a transfer coating, wherein the holographic information layer is partially covered by the second composite coating, and the adhesive force between the transfer coating and the first composite coating and between the transfer coating and the second composite coating is smaller than the adhesive force between the color printing layer and the first composite coating, and between the first composite coating and the second composite coating.
The first composite coating and the second composite coating have the same raw materials and process parameters. The holographic laser molding processing is carried out after the first composite coating is coated to form a holographic information layer, the holographic information layer is uneven holographic grains, after the second composite coating is printed by a gravure mode, the grains of the holographic information layer are filled up at a printing part, a part which is not shielded forms a local holographic information effect, meanwhile, the two composite coatings are the same coating, the two composite coatings are fused into a whole after processing, the combination is very firm, theoretically, the holographic information layer cannot be peeled off, after the transfer coating is coated, the local holographic information effect disappears, and after the transfer coating is peeled off, the transfer layer is separated from the first composite coating and the second composite coating, and the local holographic information effect is displayed.
The invention relates to a method for manufacturing an uncovering display holographic color printing anti-counterfeiting film, which is characterized by comprising the following steps:
1) carrying out color printing on the surface of the PET base film to form a color printing layer;
2) coating composite die pressing coating on the surface of the printing layer to form a first composite coating, wherein the composite coating comprises the following raw materials in parts by weight:
3) carrying out die pressing on a die pressing machine to form a holographic information layer;
4) a second composite coating is formed on the holographic information layer by adopting gravure printing composite coating in partial area;
5) coating transfer paint on the holographic information layer and the second composite coating to form a transfer coating, wherein the transfer coating comprises the following raw materials in parts by weight:
the composite die pressing coating of the invention is water composite die pressing coating, and is mainly characterized in that: the coating has strong adhesive force with a film, is not easy to peel off, has strong weather resistance, good leveling property of a coating layer, uniform coating, fresh mould pressing patterns and high brightness. Meanwhile, the composite die-pressing coating is a water-based coating and is a completely different system from a solvent-based transfer coating, so that the problems of mutual interference and undercut are avoided in the processing process, and the stripping performance of the transfer coating is ensured.
The composite die-pressing coating of the invention comprises the following raw materials:
water-based acrylic resin: the main agent resin and the film-forming resin enhance the film-forming property of the coating;
alkyd-acrylic copolymer: the firmness between the coating and the coated object is controlled, and the coating and the coated object are firmly combined together;
deionized water and alcohol: a solvent;
diethylene glycol butyl ether: slow-drying solvents, as auxiliary solvents for paints and as paint stabilizers;
dipropylene glycol methyl ether: used as an auxiliary solvent and a coupling agent of the coating.
The transfer coating is a solvent-based transfer coating and is mainly characterized in that: the coating has good leveling property and film-forming property, high transparency and good stripping property, and the stripping force of the coating is controlled by adjusting the proportion of each component, particularly the proportion of methyl methacrylate, so that the process control is facilitated. The most important is that the transfer coating and the composite die pressing coating are different coating systems and do not interfere with each other in the processing process, so that the independence of the performances of the respective coatings is guaranteed.
The transfer coating of the invention has the following functions of raw materials:
cellulose acetate: the coating main agent and the film-forming resin enhance the film-forming property of the coating;
methyl methacrylate: the transfer performance of the coating is controlled, and the stripping performance of the transfer coating is guaranteed.
DOP: plasticizer
Butanone and butyl acetate: solvent(s)
Further, the preparation method of the composite die pressing coating comprises the following steps: mixing deionized water, alcohol and diethylene glycol monobutyl ether according to the proportion requirement, dividing into two parts according to the proportion of 2: 1, slowly adding a large part of solvent into water-based acrylic resin under the stirring state, and then continuing stirring for more than 30 min; slowly adding the alkyd-acrylic acid copolymer into a small part of solvent under the stirring state, and then continuously stirring for more than 30 min; and after stirring, mixing the two resin solutions, adding dipropylene glycol methyl ether under a stirring state, and stirring for more than 30min to obtain the composite coating.
Further, the manufacturing method of the transfer coating comprises the following steps: mixing butanone and butyl acetate in a container, dividing a mixed solvent into two parts, slowly adding cellulose acetate into one part of the mixed solvent under the stirring state for dissolving, wherein the stirring time is more than 30min, slowly adding methyl methacrylate into the other part of the mixed solvent under the stirring state for dissolving, wherein the stirring time is more than 30min, mixing the two parts of the mixed solution after stirring, adding DOP under the stirring state, wherein the stirring time is more than 30min, and stirring to obtain the transfer layer coating.
Furthermore, the coating temperature of the transfer layer coating is 80-130 ℃, and the coating and drying time is 5-10S.
The color printing layer of the invention is printed with various decorative patterns, characters, trademarks, enterprise logos and the like.
The composite coating layer is tightly and firmly combined with the PET base film and the printing layer.
The holographic information layer of the present invention may be a universal or a proprietary version when embossed.
The transfer coating has strippable performance and can be separated from the composite coating, the holographic information layer on the composite coating is covered by the transfer coating under a normal state, and the holographic information layer on the composite coating can be displayed after the transfer coating is stripped.
When the adhesive tape is used for uncovering: but not limited to, a pressure-sensitive adhesive tape with the width of 4cm (the pressure-sensitive adhesive tape has strong adhesive force and good consistency) is attached to the surface of the transfer coating, then the tape is peeled off from one end of the tape at 90 degrees, at the moment, the transfer coating and the tape are peeled off together, and the holographic laser pattern on the peeled part is displayed.
The anti-counterfeiting film can also be applied to paper-plastic composite packaging, the film is processed firstly, so that packaging information is displayed on the film, the paper-plastic composite packaging box is formed, after the packaging box is damaged, the film and the paper are destructively separated, and the transfer coating is peeled off, so that a holographic effect is displayed, and the anti-counterfeiting film has excellent and visual one-line anti-counterfeiting performance.
The product of the invention has the advantage of good anti-counterfeiting performance, and the manufacturing method of the invention has the advantage of stable and reliable process.
1) The composite coating and the transfer coating are made of different systems of coatings, the performance and appearance of the composite coating and the holographic information layer on the composite coating can not be affected when the transfer coating is coated, the transfer coating can be smoothly transferred from the composite coating, and the process is stable and reliable.
2) The product is only a pure common color printing effect in appearance, and the information is public. But the holographic information layer is hidden in the film, the holographic information layer can be various holographic information anti-counterfeiting patterns and characters such as product information, company LOGO and the like, the information can not be seen under normal conditions, and the holographic information layer can be shown only after the transfer coating without the second composite coating is uncovered, so that the very practical and effective anti-counterfeiting effect is achieved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
As shown in the figure: PET base film; 2. a color printing layer; 3. a first composite coating; 4. a holographic information layer; 5. a second composite coating; 6. and (4) transferring the coating.
Detailed Description
Example 1
As shown in figure 1, one side of a PET base film 1 is sequentially provided with a color printing layer 2, a first composite coating 3, a holographic information layer 4, a second composite coating 5 and a transfer coating 6. Wherein the second composite coating 5 partly covers the holographic information layer 4.
The preparation method comprises the following steps:
1) carrying out color printing on the surface of the PET base film to form a color printing layer;
2) coating composite die pressing coating on the surface of the printing layer to form a first composite coating, wherein the composite coating comprises the following raw materials in parts by weight:
the preparation method of the composite die pressing coating comprises the following steps: mixing deionized water, alcohol and diethylene glycol monobutyl ether according to the proportion requirement, dividing into two parts according to the proportion of 2: 1, slowly adding a large part of solvent into water-based acrylic resin under the stirring state, and then continuing stirring for more than 30 min; slowly adding the alkyd-acrylic acid copolymer into a small part of solvent under the stirring state, and then continuously stirring for more than 30 min; and after stirring, mixing the two resin solutions, adding dipropylene glycol methyl ether under a stirring state, and stirring for more than 30min to obtain the composite coating.
3) Carrying out die pressing on a die pressing machine to form a holographic information layer;
4) a second composite coating is formed on the upper part of the holographic information layer by adopting gravure printing composite mould pressing coating;
5) coating transfer paint on the holographic information layer and the second composite coating at the coating temperature of 80-130 ℃ for 5-10s to form a transfer coating, wherein the transfer coating comprises the following raw materials in parts by weight:
the preparation method of the transfer coating comprises the following steps: mixing butanone and butyl acetate in a container, dividing a mixed solvent into two parts, slowly adding cellulose acetate into one part of the mixed solvent under the stirring state for dissolving, wherein the stirring time is more than 30min, slowly adding methyl methacrylate into the other part of the mixed solvent under the stirring state for dissolving, wherein the stirring time is more than 30min, mixing the two parts of the mixed solution after stirring, adding DOP under the stirring state, wherein the stirring time is more than 30min, and stirring to obtain the transfer layer coating.
The anti-counterfeiting film prepared by the embodiment is only simple in common color printing effect in appearance, and the information is public. But the holographic information layer is hidden in the local position in the film, the holographic information layer can be various holographic information anti-counterfeiting patterns and characters such as product information, company LOGO and the like, the information can not be seen under the normal condition, and the holographic information layer can be displayed only after the transfer coating without the second composite coating is removed, so that the film plays a very practical and effective anti-counterfeiting effect.
Example 2
The layer structure of this example was the same as that of example 1
The formula of the composite die-pressing coating in the preparation method of the embodiment is as follows:
the formula of the transfer coating is as follows:
the rest is the same as example 1.
This example was performed as in example 1, with the transfer coating removed.
Example 3
The layer structure of this example was the same as that of example 1
The formula of the composite die-pressing coating in the preparation method of the embodiment is as follows:
the formula of the transfer coating is as follows:
the rest is the same as example 1.
The anti-counterfeiting film is applied to paper-plastic composite packaging, the packaging box is formed after the paper-plastic composite packaging, after the packaging box is damaged, the film is destructively separated from the paper, and the transfer coating at the position without the second composite coating is peeled off, so that the local holographic effect is shown.
Claims (2)
1. The anti-counterfeiting film for revealing local holographic color printing is characterized by comprising a PET (polyethylene terephthalate) base film, a color printing layer, a first composite coating, a holographic information layer, a second composite coating and a transfer coating, wherein the holographic information layer is partially covered by the second composite coating, the adhesive force between the transfer coating and the first composite coating and between the transfer coating and the second composite coating is smaller than the adhesive force between the color printing layer and the first composite coating, and between the first composite coating and the second composite coating, the first composite coating and the second composite coating are the same water-based composite mould pressing coating, and the transfer coating is a solvent-based transfer coating.
2. The method for manufacturing the partially holographic color printing anti-counterfeiting film with the revealing function according to claim 1 is characterized by comprising the following steps:
1) carrying out color printing on the surface of the PET base film to form a color printing layer;
2) coating composite die pressing coating on the surface of the color printing layer to form a first composite coating, wherein the composite coating comprises the following raw materials in parts by weight:
the preparation method of the composite die pressing coating comprises the following steps: mixing deionized water, alcohol and diethylene glycol monobutyl ether according to the proportion requirement, dividing into two parts according to the proportion of 2: 1, slowly adding a large part of solvent into water-based acrylic resin under the stirring state, and then continuing stirring for more than 30 min; slowly adding the alkyd-acrylic acid copolymer into a small part of solvent under the stirring state, and then continuously stirring for more than 30 min; after stirring, mixing the two resin solutions, adding dipropylene glycol methyl ether under a stirring state, and stirring for more than 30min to obtain a composite coating;
3) carrying out die pressing on a die pressing machine to form a holographic information layer;
4) a second composite coating is formed on the holographic information layer by adopting gravure printing composite coating in partial area;
5) coating transfer paint on the holographic information layer and the second composite coating at the coating temperature of 80-130 ℃ for 5-10S to form a transfer coating, wherein the transfer coating comprises the following raw materials in parts by weight:
the manufacturing method of the transfer coating comprises the following steps: mixing butanone and butyl acetate in a container, dividing a mixed solvent into two parts, slowly adding cellulose acetate into one part of the mixed solvent under the stirring state for dissolving, wherein the stirring time is more than 30min, slowly adding methyl methacrylate into the other part of the mixed solvent under the stirring state for dissolving, wherein the stirring time is more than 30min, mixing the two parts of the mixed solution after stirring, adding DOP under the stirring state, wherein the stirring time is more than 30min, and stirring to obtain the transfer layer coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810694224.5A CN108973369B (en) | 2018-06-29 | 2018-06-29 | Uncovering and displaying local holographic color printing anti-counterfeiting film and manufacturing method thereof |
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| CN201810694224.5A CN108973369B (en) | 2018-06-29 | 2018-06-29 | Uncovering and displaying local holographic color printing anti-counterfeiting film and manufacturing method thereof |
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| CN108973369A CN108973369A (en) | 2018-12-11 |
| CN108973369B true CN108973369B (en) | 2020-10-16 |
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| CN110525077A (en) * | 2019-09-17 | 2019-12-03 | 东莞市源新包装制品有限公司 | A kind of printing composite transferring citicall limited aluminium shrink sleeve label label packing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10250228A (en) * | 1997-03-13 | 1998-09-22 | Mitsubishi Paper Mills Ltd | Anti-counterfeiting sheet and anti-counterfeiting adhesive-backed label |
| CN2371624Y (en) * | 1999-05-25 | 2000-03-29 | 深圳大学反光材料厂 | Concealed holographic pressure-sensitive label |
| CN2554665Y (en) * | 2002-06-06 | 2003-06-04 | 中山国安火炬科技发展有限公司 | Local holographic conceal encrypted comprehensive anti-forged mark |
| CN201399934Y (en) * | 2009-01-19 | 2010-02-10 | 吕耀晖 | Metal material with beautiful appearance and anti-counterfeiting function |
| CN101701117B (en) * | 2009-12-01 | 2012-10-10 | 上海凯兰达实业有限公司 | Laser mould pressing alcohol soluble aluminizing transfer paint and preparation method and application thereof |
| CN202058369U (en) * | 2011-03-04 | 2011-11-30 | 山东泰宝防伪技术产品有限公司 | Gravure and flexo printing combined scratch-off holographic film anti-counterfeiting label |
| CN102930778B (en) * | 2012-11-05 | 2014-12-10 | 海南天鉴防伪科技有限公司 | Uncovered counterfoil type double anti-fake structure, anti-fake method and manufacturing method |
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